I used my Line 6 UX2 on Vista and all worked correctly. Now, I'm on Windows 7, I installed the lastest software and driver and I have some problems... there is a "lag" (glitches) when a window is open to 100% (if I reduce a windows, the sound is good..no glitches). If I use youtube and use scroolbar during playing, the sound glich again. I ajusted the buffer to maximum in the mixer it's so so but not perfect again. Anyone has a idea to resolve this problem?